Looks like the list did what you wanted to, which was provoke some discussion.
It's not a bad list. Some thoughts:
- You underrate Gandhi. Free Happiness without having to produce buildings or burn Social Policy choices is incredibly strong. Gandhi is a tech monster as a result. He's not Zakharov, but it's noticeable. An extra dozen to two dozen pop early on translates into a lot of Science due to Free Thought and TPs.
- You underrate Napoleon. That culture translates into extra Social Policies, which can be very key. There are a lot of ways that his culture permits you to have your cake and eat it too, such as adopting Rationalism and pi-r8's ICS approach immediately and simultaneously once you have the relevant techs. Musketeers are decent. Think of them as cheap Rifles that you can build with Hammers; you can also delay Rifles for a bit. The Foreign Legion gives you a strong late push if you need it.
- Harun al-Rashid is going to be bad until they make his UA do ranged damage to Pikes. He's a civ to keep an eye on after the first big round of changes. He may leap up into the top tier, depending on exactly what the devs do.
- Your third tier civs are all pretty playable. Montezuma doesn't belong there, although I wouldn't bump him up to Tier 1 status. The UU is nice, but you tech past Warriors too quickly because you simply must get to Iron and Swords to conquer after the first thirty turns. As a result, you never seem to have enough upgraded Warriors late in the game, as they will take the occasional casualty. Their Warrior rush is absolutely brutal, though. Never build a Worker with this civ.
- I'm not sure why people like Bushido so much. It gets units killed. Sure, they do more damage on the way out. But a half strength melee unit that just took out another unit on rough terrain is still going to get wasted on the counterattack, because it is short on HP. The basic issue is that you can't afford to lose units, so you still have to be a big chicken with your tactics. This is the main reason why Horsemen are so good. It's not the strength. It's the speed, conferring the ability to strike and dodge out of counterattack range.
- I wouldn't lump Ramkhamhaeng in with those other Tier 1 civs. The Elephants have a very significant drawback - speed. They're inferior to Rifles, which you can have earlier via beelining Gunpowder, then popping Scientific Revolution. I'd place him a bit below Askia. Triple city pillage tends to be a bit more cash-efficient than a 50% bonus to city-state gifts, and the UU is marginally better because his upgraded Cavalry become vicious city-busters, obviating the need for Artillery.
I'd place it as (placement within tiers is ordered):
1 - Greece, China, Babylon, Persia, France, India
2 - Songhai, Siam, Rome, Aztec, Japan, Egypt, England, Arabia
3 - Russia, Iroquois, Germany, Ottoman, USA
The lines between tiers are somewhat arbitrary. India isn't hugely better than Songhai, and Arabia isn't hugely better than Russia.